Starrett “Yankee” Calipers and Dividers are made from a high-grade
steel and well-ﬁnished. The legs are made of ﬂat stock and are
very
durable. The fulcrum stud is hardened and has a smooth bearing
surface. The bow spring, although ﬂexible, is exceedingly strong to
assure reliability.
All sizes are available with either spring nut or solid nut. The Starrett
quick-adjusting automatic-closing spring nut is designed for making
fast, positive adjustments. The threads of the nut ﬁrmly engage the
screw at the slightest pressure from the leg. When the pressure is
withdrawn, the nut automatically releases itself, sliding freely over the
screw. This feature saves time in opening and closing.